Welcome to the HP English Community --
According to the user manual, the Light can be adjusted -
At this writing, and until something changes, there is no "light(s) off" switch.
User Guide - HP ENVY 6400e All-in-One series
Page 16
=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=--=
References / Resources
HP Printer Home Page - References and Resources
Learn about your Printer - Solve Problems
“Things that are your printer”
When the website support page opens, Select (as available) a Category > Topic > Subtopic
NOTE: Content depends on device type and Operating System
Categories: Alerts, Troubleshooting, Ink & Paper, HP Software / Drivers / Firmware Updates , Setup & User Guides, Product Specifications, Account & Registration, Warranty & Repair
Open
Enter the device type and model name of your HP product
OR
Select a saved product from HP Account Dashboard
OR
HP ENVY 6455e All-in-One Printer
Thank you for participating in the HP Community --
People who own, use, and support HPdevices.
ClickYes to say Thank You
Question / Concern Answered, Click my Post "Accept as Solution"